Array indices must be positive integers or logical values. Error

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Grégoire 2024-2-14

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评论： Stephen23 2024-2-14

Hey I m trying to plot these 2 functions, but when runing it it tells me : "Array indices must be positive integers or logical values." my workspace is empty.

I would be happy to learn what is going wrong...

Thanks

clear

x1= -2:0,01:2;

f1 = x1.^2-1;

f2 = sin(x1);

h1 = plot(x1,f1(x1),'b',x1,f2(x1),'r').grid;

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Stephen23 2024-2-14

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编辑：Stephen23 2024-2-14

在 MATLAB Online 中打开

x1= -2:0.01:2; % decimal comma -> point

f1 = x1.^2-1;

f2 = sin(x1);

h1 = plot(x1,f1,'b',x1,f2,'r') % removed superfluous indexing

h1 =

2×1 Line array: Line Line

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Grégoire 2024-2-14

Thanks !

Stephen23 2024-2-14

@Grégoire: if it helped please remember to click the accept button.

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MATLAB Language Fundamentals Matrices and Arrays Matrix Indexing

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